From Pathfinder Treasure Vault (Remastered), which isn't enabled.

Arachnid Harness

ITEM 7

Price 360 gp

Bulk 1

Category light

Group leather

AC Bonus +1

Dex Cap +4

Check Penalty −1

This +1 leather armor has four knobbed ribs that wrap around the torso. The armor grants you resistance 2 to poison damage.

Activate (concentrate)

Frequency once per day

Effect The ribs from the armor spread into functional spider limbs. For 1 minute, you gain a climb Speed equal to half your land Speed and have your limbs free as you climb. If you use all your free limbs to help you Climb, your climb Speed equals your land Speed.

Effect: Arachnid Harness

Requirements The initial raw materials must include four intact legs from a giant tarantula.

Pathfinder Treasure Vault (Remastered)ORC